#pragma once
#include <iostream>
#include <functional>
#include "Socket.hpp"
#include "InetAddr.hpp"
#include "Log.hpp"
#include "Protocol.hpp"

using namespace socket_ns;
using namespace log_ns;

using process_t = std::function<std::shared_ptr<Response>(std::shared_ptr<Request>)>;

class IOService
{
public:
    IOService(process_t process):_process(process)
    {}
    void IOExcute(SockSPtr sock, InetAddr& addr)
    {
        std::string packagestreamqueue;
        while(true)
        {
            //1.负责读取
            ssize_t n = sock->Recv(&packagestreamqueue);
            if(n <= 0)
            {
                LOG(INFO, "client %s quit or recv error\n", addr.AddrStr().c_str());
                break;
            }
            std::cout << "--------------------------------" << std::endl;
            std::cout << "packagestreamqueue:\n" << packagestreamqueue << std::endl;
            //我们能保证读到的是一个完整的报文吗？不能！
            //2.报文解析，提取报头和有效载荷
            std::string package = Decode(packagestreamqueue);
            if(package.empty()) continue;
            //我们能保证读到的是一个完整的报文吗？能！
            auto req = Factory::BuildRequestDafault();
            std::cout << "packgae: \n" << package << std::endl;
            //3.反序列化
            req->Deserialize(package);
            //4.业务处理
            auto resp = _process(req); // 通过请求，得到应答
            //5.序列化应答
            std::string respjson;
            resp->Serialize(&respjson);
            std::cout << "respjson: \n" << respjson << std::endl;
            //6.添加len长度报头
            respjson = Encode(respjson);
            std::cout << "respjson and header done: \n" << respjson << std::endl;
            //7.发送回去
            sock->Send(respjson);

        }
    }
    ~IOService()
    {}

private:
    process_t _process;
};